The BootROM of the RK3368 Boot ROM does not initialise cntfrq_el0. This change defines COUNTER_FREQUENCY, which is used by the AArch64 init code in arch/arm/cpu/armv8/start.S to set up cntfrq_el0.
If the counter-frequency is not correctly set up, the calculation of delays using the ARMv8 generic timer can not work correctly.
Signed-off-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com ---
include/configs/rk3368_common.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/include/configs/rk3368_common.h b/include/configs/rk3368_common.h index 488f8c5..7ab3b46 100644 --- a/include/configs/rk3368_common.h +++ b/include/configs/rk3368_common.h @@ -22,6 +22,8 @@ #define CONFIG_SYS_CBSIZE 1024 #define CONFIG_SKIP_LOWLEVEL_INIT
+#define COUNTER_FREQUENCY 24000000 + #define CONFIG_SYS_NS16550_MEM32
#define CONFIG_SYS_TEXT_BASE 0x00200000